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POST No. 2406888
OpenCR + Adafruit Monster Motor Shield
2018-07-06 13:10:06 mauriciopena

Hi!


I am trying to use the Adafruit Monster Motor Shield (https://www.sparkfun.com/products/10182) with OpenCR. Based on documentation (http://emanual.robotis.com/docs/en/parts/controller/opencr10/#arduino-connector, - "FT pins are 5V tolerant except when in analog mode. " ), I can not connect the analog pins from that shield to OpenCR, right?


Thanks!

Mauricio


2018-07-06 13:10:06
Mauricio de O. Pena
2018-07-06 15:14:53 Will Son

Hi Mauricio,


Almost all pins in the OpenCR are FT pins that are 5V tolerant, however when the pin is set as an Analog Mode, you should use 3.3V level.

I don't have experience with the Monster Moto Shield from SparkFun, but as I read the datasheet of the motor driver, the minimum voltage for logic high is 3.25V which is too close to 3.3V.

Because there is too little gap between the minimum logic high voltage(3.25V) and the analog voltage of OpenCR(3.3V), I'd recommend not to go for these combination.

Thank you.

2018-07-06 15:14:53
Will Son
2018-07-07 06:46:35 Mauricio de O. Pena

Thanks again, Will Son!


2018-07-07 06:46:35
Mauricio de O. Pena
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